Download e-book for iPad: Coatings and Inks for Food Contact Materials by Martin Forrest

By Martin Forrest

"For decades, Smithers Rapra has conducted study initiatives for the united kingdom foodstuff criteria service provider (FSA). This overview record has, as its starting place, an FSA undertaking on coatings and inks that was once performed at Smithers Rapra from 2005 till 2007. the target of this undertaking used to be to evaluate the potential of the migration of drugs from coatings and inks that have been utilized in meals packaging purposes. As an important volume of labor had already been conducted on coatings that have been in direct touch with meals (e.g., can coatings), a boundary was once set that in basic terms coatings and inks in non-direct meals touch occasions will be thought of. because the scope of this overview file is bigger than the Smithers Rapra undertaking and, end result of the boundaries of this actual structure, it has simply been attainable to incorporate a few of the details that was once obtained throughout the process the FSA undertaking.

This file has tried to hide all the coatings and inks items utilized in meals touch eventualities. for that reason, direct and non-direct touch events are integrated in the course of the foodstuff chain, e.g., harvesting, processing, transportation, packaging and cooking. In perform, this encompasses a really wide variety of polymer platforms and formulations, and an emphasis has been put on coatings and inks utilized in nutrition packaging, as this can be often considered as representing crucial software class with appreciate to the possibility of migration to ensue. With recognize to foodstuff packaging, all 3 of the main fabric sessions are lined, i.e., steel, paper and board, and plastic. as well as a radical advent of the polymers and ingredients which are used to supply coatings and inks, there also are chapters overlaying the law of those fabrics, the migration and analytical exams which are played on them to evaluate their suitability for meals touch purposes, the migration facts which were released, and the parts within the box which are receiving the main recognition for study and improvement.

This document is one in every of a chain of 3. A file summarising the present state of affairs of using rubber items for nutrition touch functions was once released in 2006 and a record reviewing using silicone-based fabrics (including rubbers, resins and beverages) with nutrients may be released through Smithers Rapra presently.

This file may be of curiosity to an individual who works with the packaging of nutrients and drinks and likewise to those that are learning meals packaging/processing.

The evaluate is observed by way of round four hundred abstracts compiled from the Polymer Library, to facilitate extra studying in this topic. a topic index and a firm index are integrated. "

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Extra info for Coatings and Inks for Food Contact Materials

Example text

7). , there are no adhesion promoters (used with ßexible packaging inks on polyoleÞn Þlms), no phenolic resins (used in most sheetfed offset litho inks), and no photoinitiators (used in UV-cured inks). b) The majority of the substances have not been evaluated and so migration studies have to be carried out using a demanding and, in some cases unfeasible, 10 ppb detection limit. The end result could be that some inks become unavailable. The regulations that exist within certain states in the EU can be used to demonstrate compliance with the Framework Regulation.

Each of the principal regulatory documents that are relevant to coatings and inks are brießy described in the relevant sections next. 1 Regulation in the European Union There are no speciÞc harmonised regulations in the EU that cover the use of either coatings or inks with food. However, the Framework Regulation 1935/2004 applies to all materials intended for food contact and so it must be complied with by all manufacturers of printing inks and coatings. This document states that food contact materials and articles: a) Shall be manufactured in compliance with good manufacturing practice b) Shall not transfer their constituents to foodstuffs in quantities which could endanger human health, and Coatings and Inks for Food Contact Materials c) Shall not bring about an unacceptable change in the composition of the foodstuff or a deterioration in its organoleptic characteristics.

Nitrocellulose resins are used to provide excellent dispersion of the pigments in inks. Thermoplastic polyurethanes and other resins are used to plasticise and improve the adhesion characteristics of the formulated inks. 28 Other resins such as polyamides and polyvinyl butyrals (PVB) have limitations. Polyamides, although providing superior gloss and adhesion properties, are not as effective in heat sealing conditions and suffer from bad odour. PVB are generally used by confectioners as they have low odour characteristics, but only offer below average print ßow and heat seal characteristics.

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